如何在 Objective-C 中要求用户接受或拒绝 WKWebView 网站的 cookie

Posted 2023-02-23

【中文标题】如何在 Objective-C 中要求用户接受或拒绝 WKWebView 网站的 cookie

【英文标题】：How to ask users to accept or deny cookies for WKWebView website in Objective-C

【发布时间】：2020-11-10 22:12:21

【问题描述】：

试图要求用户在 ios 的 WKWebView 中接受具有目标 C 的 3rd 方 cookie。这是我当前的代码：

-(void) viewDidLoad 
    [super viewDidLoad];
    webView = [[WKWebView alloc] initWithFrame:[[self view] bounds]];
    NSURL *url = [NSURL URLWithString:@"https://www.example.com"];
    NSURLRequest *urlReq = [NSURLRequest requestWithURL:url];

    [webView loadRequest:urlReq];
    [self.view addSubview:webView];
    [self setupConfiguration];
    // Do any additional setup after loading the view.

很抱歉，这不是一个狭隘的问题 - 接近截止日期并需要帮助，并且对于 Objective-c/iOS 来说仍然相对较新。非常感谢任何帮助！

【参考方案1】：

您必须按照<WKNavigationDelegate> 协议声明您的 ViewControllers 接口

并实施

-(void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler 
    
    NSHTTPURLResponse *response = (NSHTTPURLResponse*)navigationResponse.response;
    NSURL *url = response.URL;

    if (!url) 
        decisionHandler(WKNavigationResponsePolicyCancel);
        return;
    
    
    NSDictionary<NSString *, NSString *> *headerFields = response.allHeaderFields;
    if (headerFields.count > 0) 
        NSArray<NSHTTPCookie *> *cookielist = [NSHTTPCookie cookiesWithResponseHeaderFields:headerFields forURL:url];
        for (NSHTTPCookie *cookie in cookielist) 
            [_webView.configuration.websiteDataStore.httpCookieStore setCookie:cookie completionHandler:nil];
        
    

    decisionHandler(WKNavigationResponsePolicyAllow);


-(void)setupConfiguration 
    //this is actually the old way, but is not deprecated.
    NSHTTPCookieStorage *appCookies = NSHTTPCookieStorage.sharedHTTPCookieStorage;
    appCookies.cookieAcceptPolicy = NSHTTPCookieAcceptPolicyAlways;
    //... your stuff ...

【讨论】：

NSHTTPCookieStorage 真的可以在 WKWebView 上工作吗？认为它总是用于 UIWebView

RFC 6265 仍然是标准，因此其存储策略仍然有效。仔细阅读如果触发设备策略、应用程序策略和基于视图的策略会发生什么。请参阅：NSHTTPCookieStorage 与 WKHTTPCookieStore。特别注意 In cases where a cookie storage is shared between processes, changes made to the cookie accept policy affect all currently running apps using the cookie storage. 观看文档以了解 可用性